==========================================================================
Ubuntu Security Notice USN-3486-1
November 21, 2017

samba vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

– Ubuntu 17.10
– Ubuntu 17.04
– Ubuntu 16.04 LTS
– Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in Samba.

Software Description:
– samba: SMB/CIFS file, print, and login server for Unix

Details:

Yihan Lian and Zhibin Hu discovered that Samba incorrectly handled memory
when processing certain SMB1 requests. A remote attacker could possibly use
this issue to execute arbitrary code. (CVE-2017-14746)

Volker Lendecke discovered that Samba incorrectly cleared memory when
returning data to a client. A remote attacker could possibly use this issue
to obtain sensitive information. (CVE-2017-15275)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 17.10:
samba 2:4.6.7+dfsg-1ubuntu3.1

Ubuntu 17.04:
samba 2:4.5.8+dfsg-0ubuntu0.17.04.8

Ubuntu 16.04 LTS:
samba 2:4.3.11+dfsg-0ubuntu0.16.04.12

Ubuntu 14.04 LTS:
samba 2:4.3.11+dfsg-0ubuntu0.14.04.13

In general, a standard system update will make all the necessary changes.

References:
https://www.ubuntu.com/usn/usn-3486-1
CVE-2017-14746, CVE-2017-15275

Package Information:
https://launchpad.net/ubuntu/+source/samba/2:4.6.7+dfsg-1ubuntu3.1
https://launchpad.net/ubuntu/+source/samba/2:4.5.8+dfsg-0ubuntu0.17.04.8
https://launchpad.net/ubuntu/+source/samba/2:4.3.11+dfsg-0ubuntu0.16.04.12
https://launchpad.net/ubuntu/+source/samba/2:4.3.11+dfsg-0ubuntu0.14.04.13

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==========================================================================
Ubuntu Security Notice USN-3486-2
November 21, 2017

samba vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

– Ubuntu 12.04 ESM

Summary:

Samba could be made to expose sensitive information over the
network.

Software Description:
– samba: SMB/CIFS file, print, and login server for Unix

Details:

USN-3486-1 fixed a vulnerability in Samba. This update provides the
corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

 Volker Lendecke discovered that Samba incorrectly cleared memory when
 returning data to a client. A remote attacker could possibly use this
 issue to obtain sensitive information. (CVE-2017-15275)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 12.04 ESM:
  samba                           2:3.6.25-0ubuntu0.12.04.14

In general, a standard system update will make all the necessary
changes.

References:
  https://www.ubuntu.com/usn/usn-3486-2
  https://www.ubuntu.com/usn/usn-3486-1
  CVE-2017-15275
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